Process for obtaining new effects on animal fibers



Patented Mar. 24, 1925.

UNITED STATES PATENT OFFICE.

WILHELM HELMUT SCHW EITZE R, OF HEIDELBERG, GERMANY, AS SIGNOR, BY MESNE ASSIGNMENTS, TO AMERICAN LANIL CORPORATION, A CORPORATION OF NEW JERSEY.-

PBOCESS FOR OBTAINING-NEW EFFECTS ON ANIMAL FIBERS.

No Drawing. 7

otherwise oxidized wool if the subsequent treatment with parafiine or other Wax is performed on the chlorinated or otherwise oxidized wool by way of direct application thereof, that is without "any intermediate alkaline treatment. Wool thus treated shows, when being inuse to cover body parts, the

surprising property of keeping them warm,

probably by reason of areduction of the heat conductibility of the fibers, wherebythe preliminary chlorination or other oxidation of the fibers renders them particularly proper for this parafiine or other wax impregnation.

nate'd or otherwise oxidized wool with I have found The treatment of the chlori- Applieationfiled November 17, 1922.. Serial No. 601,647.

parafline or other wax may be effected before or after the dyeing or without any dyeing operation.

Example: 100 kilos of knitting yarn of wool are chlorinated and dyed in any known manner. After being dried, the material is passed through a bath of molten parafiine, then squeezed out and liberated by known means from any excess of parafline. By reason of the chlorination of the fibers, the same become extremely able to absorb the impregnating parafiine mass, so that a thoroughimpregnation of the fibers is obtained and kept up even on repeated washing.

\Vhat I claim is:

The process of treating animal fibers which consists in subjecting chlorinated or oxidized wool to a bath of wax by direct application without intermediate alkaline treatment, andthen removing any excess of wax.

In witness whereof I have hereunto signed my name this 2nd day of November, 1922, in the presence of two subscribing witnesses;

WILHELM HELMUT SCHWEITZER.

lVitne sses:

AMAND BAUN, JULIA A. DURST. 

